Protection from both Generator and Source Power
Note: You will need a short piece of
4 conductor, 6 gauge wire to complete this installation
Read instructions completely before starting
1. Unplug RV from the power source and be sure generator is off.
2. Locate transfer switch box. Remove cover from transfer box and remove the
output cable. This cable will now be the output from the EMS control box.
3. Remove EMS control box cover. Back off the six set screws from the top of
contactor (relay).
4. Determine where the EMS control box and remote display will be mounted
taking into consideration the output cable length.
5. Measure the distance between the transfer switch and the EMS control box
input (L1 side) and add one foot. This is the length of cable that will be
required for the installation. Make sure a 6-gauge 4-conductor cable is
used.
6. Take jumper cable and strip back one end 3¼ inches, and the other end the
same as the end removed from the transfer box.
7. Strip back all conductors
⅜
inch. Attach ring terminals to green wires. DO
NOT use ring terminal on any solid ground wire but instead make a ring
with the solid wire itself.
8. Take the jumper cable with 3¼ inch conductor strip, and slide it through the
input side of the EMS control box then connect
Black
wire to L1,
White
wire to L2,
Red
wire to L3,
Green
to ground screw and tighten each set
screw and ground nut.
9. The cable that was removed from the transfer switch connects to the output
(T-1) in the same manner with the following exceptions. A) Insert the
Black wire thru the current sensor with the green tape on it. B) Insert the
Red wire thru the other current sensor. Make sure that the wire colors
match across the contactor (relay) from each other. Cut back wires
removed from transfer box to 3¼ inches if needed.
10. Connect the loose end of the jumper cable to the transfer switch. See wiring
diagram on the transfer switch if needed.
11. Double check all connections and make sure they are secure.
12. Secure cable ends by tightening down strain relief’s over outer jacket. Do not
over tighten. This could bite through insulation and cause a short.
13. Set time delay jumper on the circuit board. Factory setting is for 15 seconds,
pull head of jumper (J6 on circuit board by left side of display socket) to
set for 136 seconds. See features section on time delay to determine
which to use.
14. Insert display card, with display facing you and digits reading correctly,
upright.
15. Attach EMS cover with the six black machine screws provided. Input to input
side. Fasten transfer switch cover.
16. Mount EMS Control Box in desired locations.
17. Installation is complete. Plug in and follow instructions.
5
